Write the principal value of `t a n^(-1)[t a n(3pi)/4]dot`

Write the principal value of tan^(-1)[tan(3 pi)/(4)]

Write whether The principal value of "tan"^(-1) ("tan" (3pi)/4) is (3pi)/4 statements are true or false.

If ("cos"(x-y))/("cos"(x+y))=m/n , then write the value of t a n x\ t a n ydot

If t a n A+cot A=4, then write the value of t a n^4A+cot^4Adot

If A+B=C , then write the value of t a n A\ t a n B\ t a n Cdot

Evaluate: tan{2t a n-1 1/5+pi/4}

If x=asin2t(1+cos2t) and y=bcos2t(1-cos2t), find the values of (dy)/(dx) at t=pi/4 and t=pi/3dot

If x in[(4n+1)(pi)/(2),(4n+3)(pi)/(2)] and n in N , then the value of int_(0)^(x) [cos t] dt , is

In an A.P. if S_1=T_1+T_2+T_3+.....+T_n(nod d)dotS_2=T_2+T_4+T_6+.........+T_(n-1) , then find the value of S_1//S_2 in terms of ndot